Like regular film, you will see some degrading and flaws in the photo when you enlarge from digital. In fact, sometimes, it is worse because of the nature of digital (pixilating, blocky edges, separation of graduated lights or colours). Fuji's E900's...
Other than the medium format digital camera backs, most digital cameras (point and shoot and DSLR's) are either 3:4 or 2:3 ratio. The 2:3 ratio is what 35mm cameras produce on film (24x36mm). Your LCD screen is only an approximation of the compositio...
The best format to shoot in - provided your camera gives you the option - is RAW. That has been called a 'digital negative'. JPEG is a 'lossy' format which means that each time you open it you can loose some of the digital information. That does not ...